Current Conditions

Grayslake, Illinois

69°F20°C

Showers

Wind

W 10 mph17 km/h

Humidity

77%

Cloud Cover

As of Tuesday, October 13, 2026 at 8:30 AM CDT

Today's Outlook

Day

Mostly clear and warm, with a high of 73°F23°C and morning low of 68°F20°C. Breezy from the W at 9 to 12 mph14 to 19 km/h.

Night

Mostly clear, with a low around 65°F18°C. Breezy from the WSW at 9 to 14 mph14 to 23 km/h. 52% chance of showers overnight.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Showers	High 74°F23°C	Low 65°F18°C	Precip 0.03 in0.8 mm52%	Cloud 13%	Wind W 9 mph14 km/h	Tuesday: Mostly clear and warm, with a high of 73°F23°C and morning low of 68°F20°C. Breezy from the W at 9 to 12 mph14 to 19 km/h. Tuesday Night: Mostly clear, with a low around 65°F18°C. Breezy from the WSW at 9 to 14 mph14 to 23 km/h. 52% chance of showers overnight.
Light Rain	High 64°F18°C	Low 57°F14°C	Precip 0.16 in4 mm76%	Cloud 96%	Wind NE 10 mph16 km/h	Wednesday: Overcast and mild, with a high of 61°F16°C. Breezy from the NNE at 10 to 11 mph16 to 18 km/h. 26% chance of drizzle in the morning. Wednesday Night: Overcast, with a low around 57°F14°C. Breezy from the NE at 9 to 11 mph15 to 18 km/h. 76% chance of light rain overnight.
Rain	High 59°F15°C	Low 56°F14°C	Precip 0.39 in9.9 mm92%	Cloud 99%	Wind SE 11 mph18 km/h	Thursday: Overcast and mild, with a high of 59°F15°C. Breezy from the SE at 11 mph17 km/h. 90% chance of rain in the morning. Thursday Night: Overcast, with a low around 57°F14°C. Breezy from the ESE at 11 to 15 mph18 to 24 km/h. 92% chance of light rain in the evening.
Light Rain	High 56°F13°C	Low 45°F7°CFeels 38°F4°C	Precip 0.13 in3.2 mm60%	Cloud 71%	Wind NW 17 mph28 km/h	Friday: Mostly cloudy and mild, with a high of 51°F11°C. Windy from the NW at 18 to 20 mph29 to 32 km/h. 52% chance of light rain in the morning. Dry air. Friday Night: Mostly cloudy, with a low around 45°F7°C. Windy from the NW at 16 to 17 mph26 to 27 km/h. 60% chance of showers overnight.
Clear	High 52°F11°C	Low 38°F3°CFeels 32°F0°C	Precip 0 in0 mm—	Cloud 12%	Wind W 10 mph16 km/h	Saturday: Mostly clear and mild, with a high of 52°F11°C and morning low of 38°F3°C. Breezy from the W at 9 mph14 km/h. Dry air. Saturday Night: Mostly clear, with a low around 39°F4°C. Breezy from the WNW at 11 to 14 mph18 to 23 km/h.
Clear	High 59°F15°C	Low 43°F6°CFeels 36°F2°C	Precip 0 in0 mm—	Cloud 7%	Wind SSW 12 mph20 km/h	Sunday: Mostly clear and mild, with a high of 59°F15°C and morning low of 43°F6°C. Breezy from the SSW at 13 to 14 mph21 to 22 km/h. Dry air. Sunday Night: Mostly clear, with a low around 43°F6°C. Breezy from the SSW at 12 mph19 km/h.
Partly Cloudy	High 62°F17°C	Low 47°F9°CFeels 43°F6°C	Precip 0 in0 mm—	Cloud 48%	Wind SSW 9 mph14 km/h	Monday: Mostly cloudy and mild, with a high of 62°F17°C and morning low of 47°F9°C. Breezy from the SSW at 9 mph14 km/h. Dry air. Monday Night: Partly cloudy, with a low around 48°F9°C. Breezy from the SSW at 9 to 12 mph15 to 20 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	TuesdayOct 13	74°F23°C	65°F18°C	0.03 in0.8 mm· 52%	13%	Showers	W 9 mph14 km/h
DayMostly clear and warm, with a high of 73°F23°C and morning low of 68°F20°C. Breezy from the W at 9 to 12 mph14 to 19 km/h. NightMostly clear, with a low around 65°F18°C. Breezy from the WSW at 9 to 14 mph14 to 23 km/h. 52% chance of showers overnight.
	WednesdayOct 14	64°F18°C	57°F14°C	0.16 in4 mm· 76%	96%	Light Rain	NE 10 mph16 km/h
DayOvercast and mild, with a high of 61°F16°C. Breezy from the NNE at 10 to 11 mph16 to 18 km/h. 26% chance of drizzle in the morning. NightOvercast, with a low around 57°F14°C. Breezy from the NE at 9 to 11 mph15 to 18 km/h. 76% chance of light rain overnight.
	ThursdayOct 15	59°F15°C	56°F14°C	0.39 in9.9 mm· 92%	99%	Rain	SE 11 mph18 km/h
DayOvercast and mild, with a high of 59°F15°C. Breezy from the SE at 11 mph17 km/h. 90% chance of rain in the morning. NightOvercast, with a low around 57°F14°C. Breezy from the ESE at 11 to 15 mph18 to 24 km/h. 92% chance of light rain in the evening.
	FridayOct 16	56°F13°C	45°F7°C Feels 38°F4°C	0.13 in3.2 mm· 60%	71%	Light Rain	NW 17 mph28 km/h
DayMostly cloudy and mild, with a high of 51°F11°C. Windy from the NW at 18 to 20 mph29 to 32 km/h. 52% chance of light rain in the morning. Dry air. NightMostly cloudy, with a low around 45°F7°C. Windy from the NW at 16 to 17 mph26 to 27 km/h. 60% chance of showers overnight.
	SaturdayOct 17	52°F11°C	38°F3°C Feels 32°F0°C	0 in0 mm· —	12%	Clear	W 10 mph16 km/h
DayMostly clear and mild, with a high of 52°F11°C and morning low of 38°F3°C. Breezy from the W at 9 mph14 km/h. Dry air. NightMostly clear, with a low around 39°F4°C. Breezy from the WNW at 11 to 14 mph18 to 23 km/h.
	SundayOct 18	59°F15°C	43°F6°C Feels 36°F2°C	0 in0 mm· —	7%	Clear	SSW 12 mph20 km/h
DayMostly clear and mild, with a high of 59°F15°C and morning low of 43°F6°C. Breezy from the SSW at 13 to 14 mph21 to 22 km/h. Dry air. NightMostly clear, with a low around 43°F6°C. Breezy from the SSW at 12 mph19 km/h.
	MondayOct 19	62°F17°C	47°F9°C Feels 43°F6°C	0 in0 mm· —	48%	Partly Cloudy	SSW 9 mph14 km/h
DayMostly cloudy and mild, with a high of 62°F17°C and morning low of 47°F9°C. Breezy from the SSW at 9 mph14 km/h. Dry air. NightPartly cloudy, with a low around 48°F9°C. Breezy from the SSW at 9 to 12 mph15 to 20 km/h.
	TuesdayOct 20	64°F18°C	48°F9°C Feels 45°F7°C	0 in0 mm· —	26%	Clear	S 7 mph11 km/h
DayMostly clear and mild, with a high of 64°F18°C and morning low of 48°F9°C. Breezy from the S at 7 mph11 km/h. Dry air. NightPartly cloudy, with a low around 48°F9°C. Breezy from the S at 7 to 8 mph12 to 13 km/h.
	WednesdayOct 21	65°F18°C	53°F12°C	0.05 in1.3 mm· 15%	39%	Drizzle	S 9 mph14 km/h
DayPartly cloudy and mild, with a high of 65°F18°C and morning low of 53°F12°C. Breezy from the S at 9 mph14 km/h. 13% chance of drizzle in the afternoon. NightPartly cloudy, with a low around 53°F12°C. Breezy from the S at 9 to 10 mph14 to 16 km/h. 15% chance of drizzle in the evening.
	ThursdayOct 22	64°F18°C	57°F14°C	0.15 in3.8 mm· 25%	65%	Showers	SSW 10 mph16 km/h
DayMostly cloudy and mild, with a high of 64°F18°C and morning low of 57°F14°C. Breezy from the SW at 10 mph16 km/h. 25% chance of showers in the morning. NightMostly cloudy, with a low around 57°F14°C. Breezy from the SSW at 10 to 11 mph16 to 17 km/h. 24% chance of showers overnight.
	FridayOct 23	62°F16°C	55°F13°C	0.2 in5.1 mm· 28%	71%	Light Rain	S 10 mph16 km/h
DayMostly cloudy and mild, with a high of 62°F16°C and morning low of 55°F13°C. Breezy from the S at 10 mph16 km/h. 28% chance of showers in the morning. NightMostly cloudy, with a low around 55°F13°C. Breezy from the SSW at 10 to 11 mph16 to 18 km/h. 25% chance of light rain overnight.
	SaturdayOct 24	60°F15°C	54°F12°C	0.2 in5.2 mm· 31%	72%	Light Rain	SW 11 mph17 km/h
DayMostly cloudy and mild, with a high of 60°F15°C and morning low of 54°F12°C. Breezy from the SW at 11 mph17 km/h. 30% chance of light rain in the morning. Dry air. NightMostly cloudy, with a low around 54°F12°C. Breezy from the SW at 11 mph17 km/h. 31% chance of light rain overnight.
	SundayOct 25	56°F13°C	49°F10°C Feels 45°F7°C	0.1 in2.5 mm· 19%	63%	Drizzle	W 10 mph16 km/h
DayMostly cloudy and mild, with a high of 56°F13°C and morning low of 49°F10°C. Breezy from the W at 10 mph16 km/h. 18% chance of drizzle in the morning. Dry air. NightMostly cloudy, with a low around 49°F10°C. Breezy from the W at 10 to 11 mph16 to 18 km/h. 19% chance of drizzle overnight.
	MondayOct 26	54°F12°C	47°F8°C Feels 42°F6°C	0.08 in2.1 mm· 15%	60%	Drizzle	WNW 9 mph15 km/h
DayMostly cloudy and mild, with a high of 54°F12°C and morning low of 47°F8°C. Breezy from the WNW at 9 to 10 mph15 to 16 km/h. 13% chance of drizzle in the morning. Dry air. NightMostly cloudy, with a low around 47°F8°C. Breezy from the W at 9 to 10 mph15 to 16 km/h. 15% chance of drizzle overnight.
	TuesdayOct 27	53°F11°C	46°F8°C Feels 41°F5°C	0.08 in2 mm· 17%	58%	Flurries	W 9 mph15 km/h
DayMostly cloudy and mild, with a high of 53°F11°C and morning low of 46°F8°C. Breezy from the W at 10 mph15 km/h. 17% chance of flurries in the morning. Dry air. NightMostly cloudy, with a low around 46°F8°C. Breezy from the W at 9 to 10 mph15 to 16 km/h. 15% chance of flurries overnight.

Nearby Cities

Round Lake3 mi4 km Round Lake Beach3 mi5 km Mundelein6 mi10 km Libertyville6 mi10 km Gurnee7 mi12 km Vernon Hills9 mi15 km

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

Pattern	Example	Description
/weather/{country}/{city}/	/weather/united-states/san-francisco/	City forecast (canonical URL)
/weather/{city}/	/weather/tokyo/	Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}/	/weather/united-states/california/san-francisco/	With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}	/weather/nearby?lat=48.1&lon=11.5	Find nearest city by coordinates
/weather/{country}/	/weather/germany/	Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 42.3445°N, 88.0417°W·Elevation: 239m·Timezone: America/Chicago·Population: 20,915